Post mountable drink holder



FIG. 1 is a top front side perspective view of a post mountable drink holder showing my new design;

FIG. 2 is a front view of the post mountable drink holder, right side, left side, and back views each being identical;

FIG. 3 is a top view of the post mountable drink holder;

FIG. 4 is a bottom view of the post mountable drink holder; and,

FIG. 5 is a cross-sectional view taken along line 5-5 of FIG. 3. 

CLAIM The ornamental design for a post mountable drink holder, as shown and described. 